DESCRIPTION

The device is dc-dc controller specifically designed to provide extremely high efficiency conversion for mobile advanced microprocessors.

The constant on-time topology assures fast load transient response. The embedded voltage feedforward provides nearly constant switching frequency operation.

A precise 5-bit DAC allows select output voltage from 0.6V to 1V with 25mV steps and from 1V to 1.75V with 50mV steps.

L6996 is capable of supporting CPUs VID combination changing during normal operation.

The active droop allows adjust both the output loadline slope and the zero-load output voltage.

■ 5 BIT DAC WITH AVAILABLE EXTERNAL OUTPUT VOLTAGE.

■ 0.6 TO 1.750V, DYNAMICALLY ADJUSTABLE OUTPUT VOLTAGE RANGE.

■ ±1 OUTPUT ACCURACY OVER LINE AND LOAD.

■ ACTIVE DROOP.

■ CONSTANT ON TIME TOPOLOGY ALLOWS LOW DUTY CYCLE AND FAST LOAD TRANSIENT.

■ 90 EFFICIENCY FROM 12V TO 1.35V/8A.

■ 1.750V TO 28V BATTERY INPUT RANGE.

■ OPERATING FREQUENCY UP TO 1MHZ.

■ INTEGRATED HIGH CURRENT DRIVERS.

■ LATCHED OVP AND UVP PROTECTIONS. OCP PROTECTION.

■ 350μA TYP. QUIESCENT CURRENT.

■ 7μA TYP. SHUTDOWN SUPPLY CURRENT.

■ PGOOD AND OVP SIGNALS.

■ ZERO-CURRENT DETECTION AND PULSEFREQUENCY MODE.

APPLICATIONS

■ ADVANCED MOBILE CPUs SUPPLY WITH DYNAMIC TRANSITIONS.

■ NOTEBOOK/LAPTOP, CONCEPT PC CPUs SUPPLY.

■ DC/DC FROM BATTERY SUPPLY EQUIPMENTS.